I:put the correct form of the verb in brackets

1.people (use) ... solar energy in the future. 2. By 2020, people in Viet Nam(spent)... a lot of money on heating 3.what ... we (do)... to save electricity,dad? 4.at 10 o’clock tomorrow he (work)... in his office 5.my father(visit)... to Ha Long Bay next week 6.at 5 o’clock tomorrow Nam (play)...football with his friends. 7.they (buld).... their house this time next week 8.at 8 a.m tomorrow, my sister(learn)...English with her friends

9.Ba(buy)...a new house tomorrow.

10.we(build)... a hydro power station in this area next month.